Spike nut



FIG. 1 is a top plan view;

FIG. 2 is a front elevation;

FIG. 3 is a bottom plan view;

FIG. 4 is a right-side elevation;

FIG. 5 is a cross section taken along the line A—A in FIG. 1; and,

FIG. 6 is an enlarged perspective view.

A rear elevation symmetrical with the front elevation, as well as a left-side elevation also symmetrical with the right-side elevation, are excluded from the drawings. 

The ornamental design for a spike nut, as shown and described. 